Sylvania



Patented Nov. 29, |898.

F'. l. SHELHAMER &. S. C. GARNER.

TOOL HOLDER.

(Appcaton led Oct. 26, 1897.)

(N0 Model.)

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UNITED STATES PATENT OFFICE.

FRANK I. SHELHAMER AND SAMUEL O. GARNER, OF J EANESVILLE, PENN- SYLVANIA, ASSIGNORS OF ONE-THIRD TO THE JEANESVILLE IRON WORKS COMPANY, OF SAME PLACE.

TOOL-HOLDER.

SPECIFICATION forming part of Letters Patent No. 615,1 10, dated November 29, 1898. Application filed October 26, 1897. Serial No. 656,464. (No model.)

To all whom t may concern:

Be it known that we, FRANK I. SHELHAMER and SAMUEL O. GARNER,citizens of the United States, residing at J eanesville, in the county of Luzerne and State of Pennsylvania, have invented a new and useful Tool-Holder, of which the following is a specification.

This invention relates to tool-holders adapted for use in blades for turning metal, the ob- Io ject of the invention being to improve the construction of devices of this character whereby the tool may be more easily inserted in or removed from the holder and the latter willbe less liable to become glutted with chips,

i5 or in the event it should become glutted theA removal of the tool will not be prevented thereby.

With this objectin view the invention consists of the several details of construction and zo combination of parts, as will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings, Figure l is a perspective view of a tool-holder made in accordance with 2 5 our invention. Fig. 2 isa transverse section through the head of the holder. Fig. 3 is a perspective view of lthe clamping-bolt detached. Fig. Ll is a similar view of the holder, the tool and clamping-bolt being removed.

3o Similar reference-numerals indicate similar parts in the several figures.

l indicates the shank of the holder, and 2 its head. The head will be preferably circular in form and projected at its upper side 3 5 above the plane of the upper face of the shank. A circular recess 3 is formed in the head and opens out on what for the sake of distinction will be termed the front side of the holder. This recess is concave at its inner end, and

4o the openingleads from its center out through the rear side of the holder.

5 indicates an inclined rectangular groove formed in the front side of the holder and eX- tending from the lower edge thereof to its front end, and this groove intersects both walls of the recess 3 centrally of the latter.

6 indicates the tool adapted to seat in the groove 5, and the groove will be of a depth somewhat less than the thickness of the tool in order that the outer face of the tool will 5o project slightly beyond the front face of the holder, for a purpose to be hereinafter referred to. r

The clamping-bolt has a circular head 7, preferably of the same diameter as that of the circular portion of the head of the toolholder on its front side, and a cylindrical shank, (indicated by 8.) The shank is adapted to fit in the recess 3, and its end is conoidal, as indicated at 9, to fit the concave inner end 6o of said recess. The shank has a threaded eX- tension 10 to pass through the opening 4 and receive the locking-nut 11. Asquare shoulder is formed between the inner face of the head 7 and the shank 8, and the latter is pro- 65 vided with a transverse rectangular opening 12, adapted to register with the groove 5, and through which the ltool will pass. One wall of this opening is in the same plane as the inner face of the head 7 and forms a cont-inua- 7o tion thereof, and the tool will thus be engaged by the head the full width of the latter.

In order to secure the tool in the holder, the clampingfbolt will be fitted in the recess 3 with its transverse opening in alinement with the groove 5, after which the tool can be readily inserted endwise through the slot and said opening, when by tightening up the locking-nut ll the tool will be firmly secured in position'. As the tool projects slightlybeyond 8o the front face of the tool-holder it is obvious that the inner face of the bolt-head will not be able to engage with the front face of the holder and will therefore serve eifectuallyto clamp the bolt in the groove, the said head forming one clamping-surface and the bottom of the groove the other. The tool will fit sufliciently loose in the groove to slide freely therein, and itis obvious that by slightly loosening the locking-nut ll the head of the 9o bolt can be moved sufficiently to release the tool, when it can be slid out of the groove whenever it may be necessary to do so for the purpose of grinding or otherwise repairing it.

Preferably the circular portion of the head of the holder will taper slightly from its front to its rear side, as indicated at 13, and the advantage of this is that the chips or shavings will be guided to pass off the rearside of the holder and thus direct it away from the space between the head of the clamping-bolt and the head of the holder. In any eventthe circular form of the cutting-head will tend to carry the chips or shavings upwardly and rearwardly, and there will therefore be much less liability of the holder becoming glutted. Should, however, any chips or shavings be forced in between the clamping-bolt and the holder, as soon as the locking-nut is loosened and the clamping-bolt given a slight lateral movement such chips or shavings will free themselves and not retard the free movement of the tool in its withdrawal from the holder.

Itis to be understood that these tool-holders will be made of various sizes to adapt them for use with different-sized tools, and it is also to be understood that changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Having thus described the invention, what we claim is- 1. A tool-holder comprising a shank provided in one side with an open recess and formed in one of its side faces with an obliquely-disposed tool-receiving groove, intersecting both walls of said recess and shallower in depth than the thickness of the tool seated therein, a clamping-bolt having its body portion registering in the said recess and provided with a transverse opening for the tool, and means for tightening said bolt against the outer exposed side of the tool,sub stantially as set forth.

2. A tool-holder comprising a shank provided in one side, and at one end, with a circular open recess, and formed in one of its side faces with an obliquely-disposed toolreceiving groove centrally intersecting said recess and shallower in depth than the thickness of the tool seated therein, a clampingbolt registering in said recess and provided with a head having a at inner face and with a transverse opening for the tool, one wall of said opening forming a continuation of the flat inner face of the head, and means for tightening said bolt against the outer exposed side of the tool, substantially as set forth.

3. A tool-holder comprising a shank provided at one end with a circular head tapering from the front to the rear face thereof, said shank also having formed in one side a tool-receiving groove, and a clamping-bolt engaging with the tool and having its head disposed at one side and in the plane of the circular head of the shank, substantially as set forth.

In testimony that we claim the foregoing as our own we have hereto aixed our signatures in the presence of two witnesses.

FRANK I. SHELI-IAMER. SAMUEL C. GARNIER.

lVitnesses: p

W. J. REYNOLDS, ABNER SMITH. 

